A compound of the formula ##STR1## wherein A.sup.1 and A.sup.2 are independently N or CH; B is a covalent bond or C.dbd. O; R.sup.1 is hydrogen or C.sub.1 -C.sub.6 alkyl; R.sup.2 is hydrogen, fluorine, chlorine, bromine, trifluoromethyl, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, or C.sub.1 -C.sub.4 alkylthio; R.sup.3 is ##STR2## wherein R.sup.4 is phenyl optionally substituted; X is oxygen or sulphur; Y is hydrogen; or Y forms an indole group with the carbon on the ortho position of the phenyl in R.sup.4 ; or a pharmaceutically acceptable base salt thereof when R is hydrogen; with the proviso that when B is a covalent bond, A.sup.1 and A.sup.2 are each CH, and use for the inhibition of aldose reductase activity.
该化合物的
化学式为 ##STR1## 其中,A.sup.1和A.sup.2独立地为N或CH;B为共价键或C.dbd.O;R.sup.1为氢或C.sub.1-C.sub.6烷基;R.sup.2为氢、
氟、
氯、
溴、三
氟甲基、C.sub.1-C.sub.4烷基、C.sub.1-C.sub.4烷氧基或C.sub.1-C.sub.4烷
硫基;R.sup.3为 ##STR2## 其中,R.sup.4为苯基,可选择性地被取代;X为氧或
硫;Y为氢;或者Y与R.sup.4中的苯基正交位上的碳形成
吲哚基;或者其在R为氢时的药学上可接受的盐酸盐;但是,当B为共价键时,A.sup.1和A.sup.2均为CH,用于抑制醛糖还原酶活性。